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2002111131 = 31739257081
BaseRepresentation
bin111011101010101…
…1100101010011011
312011112022210011010
41313111130222123
513100020024011
6530400105003
7100420443456
oct16725345233
95145283133
102002111131
119381597a9
1247a605163
1325ba36257
1414dc8849d
15bab7d1a6
hex7755ca9b

2002111131 has 8 divisors (see below), whose sum is σ = 2826509904. Its totient is φ = 1256226560.

The previous prime is 2002111117. The next prime is 2002111151. The reversal of 2002111131 is 1311112002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2k-2002111131 is a prime.

It is a super-2 number, since 2×20021111312 = 8016897961748198322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2002111151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19628490 + ... + 19628591.

It is an arithmetic number, because the mean of its divisors is an integer number (353313738).

Almost surely, 22002111131 is an apocalyptic number.

2002111131 is a deficient number, since it is larger than the sum of its proper divisors (824398773).

2002111131 is a wasteful number, since it uses less digits than its factorization.

2002111131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39257101.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 2002111131 is about 44744.9564867371. The cubic root of 2002111131 is about 1260.3642037365.

Adding to 2002111131 its reverse (1311112002), we get a palindrome (3313223133).

The spelling of 2002111131 in words is "two billion, two million, one hundred eleven thousand, one hundred thirty-one".

Divisors: 1 3 17 51 39257081 117771243 667370377 2002111131